Can-body-flanging device.



Patented Sept. I2, |899. A. LUTZ. I

CAN BODY FLANGING DEVICE.

Application led June 26, 1899.;

3 Sheets-Sheet l,

(No Model.)

Suva/Wto@ N0. 632,840. Patented Sept. l2, |899.

A. LTZ.

CAN BODY FLANGING DEVICE.

,Application led June 28, 1899.\ (N0 Model.) 3 Sheets-Sheet 2.

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maToN. u. c.

THE Nonms paens co. pHoro-umn., WASH No. 632,840. Patented Sept. I2, |899.

A. LUTZ.

CAN BODY FLANGING DEVICE.

[Application filed 899.1

3 Sheets-Sheet 3 (No Model.)

NrrEn STATES PATENT OFFICE.

AUGUST LOTZ, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR TO F. A.

' ROBBINS, OF SAME PLACE.

CAN-BODY-FLANGING DEVICE.

SPECIFICATION forming part of Letters Patent No. 632,840, dated September 12, 1899.

Application led June 26,1899.

To all 'wh/om z'fl; may concern.-

Be it known that I, AUGUST LOTZ, a citizen of the United States, residing in the city and county of SanFrancisco, State of California, have invented an Improvement in Can-Body- Flanging Devices; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to an apparatus for Hanging can-bodies.

It consists in mechanism by which the end iianges of can-bodies are turned outwardly in a more perfect manner than has hitherto been accomplished, which mechanism will be more fully explained by reference to the accompanying drawings, in which Figure l is a general view of a machine used for rectangular cans. Fig. 2 is a partial plan view of the same. Fig. 3 is an end view of the same. Fig. 4 is a section through the chuck used for a rectangular can. Fig. 5 is an end view of the same; Fig. 6 is a section through a chuck used for circular cans. Fig. 7 is an end view of the cams and their connections. Fig. 8 is a plan view of the hub which carries the roller-arms.

In the tlangin g of can-body ends it has been customary to employ a chuck having osets, one of which is of such diameter as to allow the can to fit upon it, the end of the can abutting against a face of larger diameter. Interior to this first ange is a second one of smaller diameter, and by means of a roller pressed against the outside of the can in line with this smaller portion while the parts are in rotation that part of the can-body beneath the roller will be pressed against this smaller circumference, while the part extending over the larger circumference will be turned outwardly as the can and chuck rotate until a flange is turned in readiness to receive the covers,which are afterward secured by double seaming or other suitable method. This construction has the disadvantage, first, that it is difficult to fit the cans upon the chuck, because of the shouldered part having the full diameter of the cams, and. they are not always of exactly the diameter to iit snugly. In this case the action of Hanging causes wrinkles in the can. In my invention I form the chuck A with the part A', formed of just seria1N .721,s75. (no man.)

the diameter of the interior of the can, and the adjustable part B, having the end abutting against the part A of equal diameter; but the outer end over which the can is to be passed is convergent or tapering, so that it will easily enter and guide the can to a snug fit upon the part A. Interior to this part B is an elastic support which normally holds the part B in exact line with the part A'; but when the Hanging-roller C is brought into contact with the can in line with the part B the yielding of the support allows the part B to move with relation to the part A so that the rotation of the can and chuck upon their aXis will allow the roller C to turn the flange upon the can end by forcing it against the end of the shoulder A. Whenever the roller is removed, the elastic support returns the part B to its normal position. This is the general construction. It is adapted for use with round, oval, square, or rectangular cans of any description.

The mechanism for a round can is central, and the support for the ring B consists of a rubber or elastic ring b, tting around the shaft F interior to the ring B, and this will yield sufficiently to allow the part B to move to one side in response to the pressure of the roller C, so that as the chuck and can rotate the fiange will be turned between the partB and the part A. For langing round cans power is applied to drive the pressure-roller, and this acts when in contact with the can to rotate the latter in unison without the application of power t0 directly rotate the chuck and can, which would allow the can to slip and turn onthe chuck.

lVhen the apparatus is applied to oval, square, or rectangular cans, it is necessary to provide a means for retaining the roller C in contact with the straight sides lof the can and to allow it to pass around the corners as the can is revolved with relation to the roller. This mechanism consists of a rectangular cam E, corresponding4 in j form with the part A' of the chuck which receives the can and also with the portion B, which is movably mounted with relation to the part A, as previously described, the cam and the chuck being carried upon the same horizontal shaft F. In conjunction with the cam E e I' y IOO is another cam E', also fixed upon the shaft F and having a shape and position with relation to the cam E such that a roller G', traveling in contact with the second cam E', will act in conjunction with the roller G, which travels in contact with the cam E to retain the roller G in contact with the side of the cam E as the latter revolves. The rollers G and G' are mounted upon arms l-I and H', which project from and are loosely carried upon a shaft I, and these arms being rigidly connected with the same hub or center they move in unison with each other, so that when the shaft carrying the cams E and E' revolves the movement of the roller G' over the cam E will always act to hold the roller G in Contact with the cam E. An arm H2 on the hub of the arms H H' carries a shaft I', which thus partakes of the movements of the roller G as it follows the cam E. Upon the end of the shaft I' is a short crank I3, and this carries a lilik I2, upon the end of which is mounted the roller C. By the movements of this link the roller C is moved into or out of contact with the can, as follows: Upon the opposite end of the shaft l' is a rocker-arm I4, and this is connected by links 2 and 3 with a lever 4. The meeting ends of the links 2 and 3 are suspended by a swinging link 5, as shown, and when the lever is moved forward or back it acts through these links to turn the rocker-arm I4, and with it the shaft I', so as to advance the roller C intorcontact with the can when a flange is to be formed or to retract it after the work is 'done or to allow a new can to be introduced. It will be understood that there may be two rollers C operating simultaneously upon both ends of the can and the above-described mechanism acts u'p onboth at the same time. In the use of sg'uare or rectangular chucks for cans of this description the parts B are supported in line with the shoulders A' by means of springs D', which in this case press upon the one arm of a bell-crank lever D2, which is fulcrumed at the angle, and the other arms of these levers extend to the interior of the part B, as shown at b', where they press against it, acting in the same manner as the elastic ring D, previously described, for circular cans. Any pressure brought vupon the part B by the roller C will force it out of line with the part A', and thus cause the flange to be turned upon the 'can which is at the time fitted over these parts- The chucks here described are duplicated one for each end of the can, and the spindles which carry them are slidable longitudinally in their bearings by means of lever-arms J ,fulcrumed to the frame at j of the machine and adapted to move the shafts longitudinallyin the same manner that a clutch-lever operates. The

lower ends of these levers engage with cams K, mounted upon a shaft L, which is turnable by a crank-arm O, connected with a foot-lever or treadle P, so that when the foot is placed upon this treadle the shaft L and the vto drive both the chucks A in unison.

cams K are partially turned, and the action of the cams upon the levers J move them so that the shafts F and the chucksA are moved toward each other. A can being held between these chucks will thus be caused to slide over the tapering parts B upon the portions A' of the chuck, the ends abutting against the'parts A, and the can will then be in position for ilanging, which is effected as previously described. The power to drive the machine is derived from a main belt, chain-gear, or other equivalent, and the apparatus is started or stopped by means of a clutch and clutch-lever, as shown at Q, operating in the usual manner of such devices.

Upon the counter-shaftl is a gear-wheel R', engaging the gear S, which is mounted upon the shaft F, that carries and drives the chuck A. It will be seen that similar gears serve The operation ofthe device will then be as follows: The chucks A being normally separated to a distance greater than the length of the cans, it is only necessary to hold the cans between the chucks and place the foot upon the treadle P, when the action of the cams K and the clutch-levers J will force the chucks toward each other. sliding up the beveled or tapering ends of the part Bwill readily fit themselves upon the portions A' of the chuck, the ends abutting against the faces of the parts A. The chucks then being set in motion and the rollers C brought in contact with the exterior of Vthe can in line with the parts B, the latter will be forced to one side with relation to the parts A' of the chuck by reason of the yielding of their elastic supports, and this causes the flange to be turned upon each end of the can by the action of the rollers C. As the part B always fills the full diameter of theY can, it will be seen that no buckling nor wrinkling of the metal of the can-body can take place while the flange is being formed.

Having thus described myinveution, what I claim as new, and desire to secure by Letters Patent, is-

l. A iianging device for cans, consistingoft a chuck having a shouldered portion of a diameter equal to the interior of the can,a similarly-shaped independent ring, the contiguous face of' which is coincident With that of the shoulder, yielding supports by which the ring is normally retained in line withV the shouldered portion, a roller adapted to be broughtinto contact with the exterior of the can which is fitted over the ring and shouldered portion, a means for rotating the partsV so that the pressure of the roller will force the ring out of linewith the shouldered portion of the chuck and turn a ange upon the can end.

2. A device for Hanging can ends, consisting of a ri gidly-supported rotary chuck having a shouldered portion of a diameter equal to the interior diameter of the can, atransversely-movable yieldingly-supported ring having The ends of the cans` TOO IOS

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the end contacting with the shouldered por- I tion of the same shape, and the opposite end tapering or made smaller to enter and direct the can ends to their seats.

3. In an apparatus for hanging can ends, a rotatable rigidly-supported chuck, having a shouldered portion equal in diameter to the interior of the can to be flanged, a yieldinglysupported ring contiguous to the shouldered portion, coincident in diameter and shape therewith and with opposite end convergent to enter and direct the can ends to their seats, a roller movable transversely to contact with the can-body in line with the yielding ring whereby the latterl is forced out of line with the shouldered portion of the chuck upon that side, and the flange is turned upon the can end.

Ll. In an apparatus for flanging the ends of cans, a rigid, rotary, shouldered chuck, a yieldingly supported ring normally coincident therewith and a roller by which the ring is forced out of line with the chuck to forma flange upon the can, cams mounted upon the shafts of the chuck, one of said cams having the sha-pe of the can to be iianged, and the other so shaped with relation thereto that a roller traveling upon its periphery will maintain a second roller in contact with the periphery of the first-named cam.

5. In an apparatus for Hanging the ends of cans, a shouldered chuck, a yieldingly-supported ring normally coincident therewith, a roller by which the ring is forced out of line with the chuck to form a ange upon the can, cams mounted upon the shaft, rocker-arms projecting from a hub loosely turnable upon a support, said arms having rollers contacting with the surfaces of the cams and movable thereby, other similar arms carrying a shaft from which the dange-forming roller is sup ported and communicating motion thereto coincident with the movement of the cams, whereby the roller is maintained in contact with the sides of the can as the latter is rotated.

(i. In an apparatus for ianging the ends of cans, the rigid supporting-chucks for the cans, yieldingly-supported rings normally coincident with the chucks and tapering at the inner ends so as to guide the can ends to their position, spindles upon which the chucks are mounted, movable axially, and mechanism by which they are separated to admit a can between the chucks and thereafter brought together to force the chucks into the can ends preparatory to forming the flanges thereon.

7. In an apparatus for flanging the ends of cans, shouldered chucks, yieldingly supported rings interior thereto and normally coincident therewith, spindles slidable in the line of their axes upon which the chucks are carried, a treadle, cam, and levermechanism connected with said spindles whereby they are retracted to allow the can to be introduced between the chucks and advanced to close the chucks together and insert them into the can ends preparatory to flanging.

8. In an apparatus for Hanging the ends of cans, the shouldered chucks, yieldingly-supported rings normally coincident therewith, rollers by which the rings are forced out of line with the chucks to form lianges upon the can ends when the latter are placed upon the chucks, shafts with cranks and links upon which the flanging-rollers are carried, rockerarms in which said shafts are journaled, cams corresponding in shape with the cans to be anged and mounted upon the spindles which carry the chucks and revoluble in unison therewith, rockerarms with rollers contacting with the surfaces of the cams and following the outline thereof as they revolve, said arms moving in unison with those carrying the flanging-roller shafts whereby the rollers partake of the same motion, and follow the outline of the can to form flanges thereon during its revolution.

9. In an apparatus for Hanging cans, the shouldered chucks and yieldingly-supported rings, shafts journaled in rocker-arms having cranks and links projecting therefrom upon which the Hanging-rollers are carried, cams having the shape of the cans to be flanged, mounted upon the spindles which carry the chucks, and turnable therewith, rocker-arms with rollers at their ends contacting with the cams, following their outline and transmitting the same motion to the Hanging rollers, rocker-arms connected with the opposite ends of the shafts which carry the anging-rollers, a lever and intermediate links connecting it with one of said rockerarms whereby the shaft may be rotated in its supporting-arms to throw the angingrollers out of or into contact with the can, without interfering with the movements transmitted thereto by the cams which actuate the Hanging-rollers.

In witness whereof I have hereunto set my hand.

AUGUST LOTZ.

Witnesses:

THOMAS R. KENT, S. H. NoURsE.

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